Multiple pages

One OpenRaster file would be able to contain more than one page. This would be useful for things like sketchbooks, comic stories, or anything else where you might want to have raster images in sequence but where using separate image files would be impractical.

Any program which does not support multi-page OpenRaster files would simply show the first page and hide the others (or, perhaps, show a page defined as “default” by the image author).

Any program could implement, crudely, something like this using layer groups. However, that would be unlikely to be recognized across implementations.
(Contributions: 5 August 2010 Tina Russell)